PROBLEM TO BE SOLVED: To provide a thread-hanging auxiliary tool whhich can be appropriately used for hanging vine crops such as green pepper. SOLUTION: The thread-hanging auxiliary tool includes a semicircular stem supporting part for supporting a stem, and an approximately V-shaped thread holding part extending from the stem supporting part. A V-shaped cut is formed at the distal end of the thread supporting part, and a slit in a prescribed length for holding a thread material is formed in the base of the V-shaped cut. The semicircular stem supporting part is formed thinner than the thread holding part, and can be reamed as the stem grows. COPYRIGHT: (C)2012,JPO&INPIT